EP2478250B1 - Brake disc/hub connection - Google Patents

Brake disc/hub connection Download PDF

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Publication number
EP2478250B1
EP2478250B1 EP10754497.5A EP10754497A EP2478250B1 EP 2478250 B1 EP2478250 B1 EP 2478250B1 EP 10754497 A EP10754497 A EP 10754497A EP 2478250 B1 EP2478250 B1 EP 2478250B1
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EP
European Patent Office
Prior art keywords
brake disc
hub connection
connection according
projections
hub
Prior art date
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EP10754497.5A
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German (de)
French (fr)
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EP2478250A1 (en
Inventor
Wolfgang Pahle
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
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Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D65/12—Discs; Drums for disc brakes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D65/12—Discs; Drums for disc brakes
    • F16D65/128—Discs; Drums for disc brakes characterised by means for cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/78—Features relating to cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D2065/13—Parts or details of discs or drums
    • F16D2065/1304—Structure
    • F16D2065/1328—Structure internal cavities, e.g. cooling channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D2065/13—Parts or details of discs or drums
    • F16D2065/134—Connection
    • F16D2065/1384—Connection to wheel hub
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D2065/13—Parts or details of discs or drums
    • F16D2065/134—Connection
    • F16D2065/1392—Connection elements

Definitions

  • the invention relates to a brake discs / hub connection according to the preamble of claim 1.
  • intermeshing, tooth-shaped positive locking means For fastening a brake disk to a hub and for transmitting a brake torque arising during braking to the hub and thus to a connected vehicle wheel, intermeshing, tooth-shaped positive locking means are known, which correspond to supporting elements provided on the inner circumference of the brake disk and corresponding thereto in the sense of an anti-twist device. consist of arranged on the outer circumference of the hub drivers.
  • Such a brake discs / hub connection is for example from the DE 199 18 069 A1 or WO-A-2005/088151 known.
  • a brake discs / hub connection in which a transmission of the braking torque from the brake disc to the hub via intermediate elements, which have two smooth-surfaced, parallel to each other and in functional position over the entire surface lying legs, which are formed by folding a metal strip.
  • On one of the legs is an associated support element and on the other leg an associated driver, respectively on the opposite surfaces.
  • heat-insulating elements are used or corresponding separating layers.
  • intermediate elements also have a certain insulating effect, which is rather unsatisfactory due to the unimpeded heat transfer.
  • the insulation effect is achieved by a multiple temperature transition, from the brake disc to the intermediate element, by the formed in the system of the two legs separating surface and the intermediate element to the hub.
  • Quasi isolierunter leveragend a corresponding choice of material for the intermediate element, in which a relatively low heat conduction is required, as it has, for example, stainless steel.
  • the invention has the object of further developing a brake discs / hub connection of the generic type so that with a structurally low Expense the heat load of the hub minimized and the service life of the brake discs / hub connection is improved.
  • the heat transfer is reduced by a substantial factor, with the remaining contact surfaces of the two legs only to be dimensioned as a function of the mechanical load that occurs.
  • the contact surfaces are chosen so large that the braking forces can be transmitted without plastic deformation of the intermediate elements.
  • One of the two legs on its contact side is the same area, while the adjacent leg is provided on its associated side with transverse or longitudinal webs, each having a flat support surface which rests on the contact surface of the other leg.
  • transverse or longitudinal webs each having a flat support surface which rests on the contact surface of the other leg.
  • the bearing surfaces facing away from the bearing surfaces are smooth and full surface formed according to the invention, so that the respective support member or the respective driver can be supported over the entire surface area for transmitting the braking forces.
  • the protruding partial contact surfaces can be produced by embossing the surrounding areas.
  • a compensation of the elongation is effected by providing a material buffer between the embossing process and a next forming process in which, for example, the legs are angled end.
  • the plant of one leg only in partial areas on the other leg not only leads to a reduction of effective for heat transfer surfaces, but by the gap formed between two subsections also results in better cooling, as an unimpeded passage of air, especially wind ensures effective cooling, which also contributes to a reduction in the heat load of the corresponding parts.
  • FIG. 1 a brake discs / hub connection is shown, for connecting an annular, internally ventilated brake disc 1 with a hub 2, which may be formed as a brake disc hub, but also as a wheel hub, on which the brake disc can be pushed.
  • radially inwardly extending, spaced apart and evenly distributed over the circumference supporting elements 4 are integrally formed on the inner periphery of the brake disc.
  • the hub 2 has on its the brake disc 1 facing end portion distributed over the outer circumference, radially outwardly projecting driver 5, which correspond in the sense of a toothing with the support members 4 of the brake disc 1.
  • Such an intermediate element is as a detail in the respective Figures 2 and 3 shown. It can also be seen that the intermediate element 3 has two adjoining legs 6, 7, wherein an associated driver 5 or an associated support element 4 are supported on the surfaces facing away from each other.
  • the leg 7 bears against projections on the limb 6 aligned in the widest sense.
  • the intermediate element is shown prior to assembly.
  • the legs 6, 7 are slightly spread by inherent restoring forces, ie they are not yet in this case together.
  • the webs 8 are arranged at the same distance from each other.
  • embossing in which a material dilution is achieved by an embossing tool, formed between the webs 8 column 9, which allow air circulation and thus a heat discharge.
  • the upper leg 7 is narrower than the lower leg 6, so that a widening of the leg 7 in the embossing is easily possible, of course, only if the broadening does not exceed the width of the lower leg 6.
  • the intermediate element 3 consists of a substantially chipless formed metal strip, which may be cut from a coil, for example, wherein the two legs 6, 7 are produced by folding transversely to the longitudinal extent and end each have a bend 10, which in cooperation with a fuse element not shown ensures axial securing of the brake disc 1 to the hub 2.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)

Description

Die Erfindung betrifft eine Bremsscheiben/Nabenverbindung nach dem Oberbegriff des Anspruchs 1.The invention relates to a brake discs / hub connection according to the preamble of claim 1.

Zur Befestigung einer Bremsscheibe an einer Nabe sowie zur Übertragung eines beim Bremsen entstehenden Bremsmoments auf die Nabe und damit auf ein angeschlossenen Fahrzeugrad, sind ineinander greifende, zahnförmige Formschlussmittel bekannt, die aus am Innenumfang der Bremsscheibe vorgesehenen Stützelementen und mit diesen im Sinne einer Verdrehsicherung korrespondierenden, am Außenumfang der Nabe angeordneten Mitnehmern bestehen.For fastening a brake disk to a hub and for transmitting a brake torque arising during braking to the hub and thus to a connected vehicle wheel, intermeshing, tooth-shaped positive locking means are known, which correspond to supporting elements provided on the inner circumference of the brake disk and corresponding thereto in the sense of an anti-twist device. consist of arranged on the outer circumference of the hub drivers.

Eine solche Bremsscheiben/Nabenverbindung ist beispielsweise aus der DE 199 18 069 A1 oder WO-A-2005/088151 bekannt.Such a brake discs / hub connection is for example from the DE 199 18 069 A1 or WO-A-2005/088151 known.

Darin ist eine Bremsscheiben/Nabenverbindung geoffenbart, bei der eine Übertragung des Bremsmoments von der Bremsscheibe auf die Nabe über Zwischenelemente erfolgt, die zwei glattflächige, parallel zueinander verlaufende und in Funktionsstellung vollflächig aneinander liegende Schenkel aufweisen, die durch Faltung eines Blechstreifens gebildet sind. An einem der Schenkel liegt ein zugeordnetes Stützelement und am anderen Schenkel ein zugeordneter Mitnehmer an, jeweils an den einander abgewandten Flächen.Therein, a brake discs / hub connection is disclosed, in which a transmission of the braking torque from the brake disc to the hub via intermediate elements, which have two smooth-surfaced, parallel to each other and in functional position over the entire surface lying legs, which are formed by folding a metal strip. On one of the legs is an associated support element and on the other leg an associated driver, respectively on the opposite surfaces.

Funktional hat sich die Konstruktion durchaus bewährt.Functionally, the construction has proven itself.

Ein ständiges Problem stellt der Wärmeübergang der beim Bremsen entstehenden Reibungswärme von der Bremsscheibe auf die Nabe dar, wozu bislang verschiedene Möglichkeiten bekannt sind, die jedoch allesamt mit Nachteilen behaftet sind.A constant problem is the heat transfer of the heat generated during braking frictional heat from the brake disc to the hub, for which hitherto various possibilities are known, but all of which are associated with disadvantages.

So werden beispielsweise wärmeisolierende Elemente eingesetzt oder entsprechende Trennschichten. Die gemäß der Gattung vorgesehenen Zwischenelemente haben zwar auch eine gewisse isolierende Wirkung, die allerdings aufgrund des ungehinderten Wärmeübergangs eher unbefriedigend ist. Dabei wird die Isolationswirkung erreicht durch einen mehrfachen Temperaturübergang, und zwar von der Bremsscheibe auf das Zwischenelement, durch die bei der Anlage der beiden Schenkel gebildete Trennfläche sowie vom Zwischenelement zur Nabe. Quasi isolierunterstützend erfolgt eine entsprechende Materialwahl für das Zwischenelement, bei dem eine relativ geringe Wärmeleitung gefordert ist, wie sie beispielsweise rostfreier Stahl aufweist.For example, heat-insulating elements are used or corresponding separating layers. Although provided according to the genus intermediate elements also have a certain insulating effect, which is rather unsatisfactory due to the unimpeded heat transfer. In this case, the insulation effect is achieved by a multiple temperature transition, from the brake disc to the intermediate element, by the formed in the system of the two legs separating surface and the intermediate element to the hub. Quasi isolierunterstützend a corresponding choice of material for the intermediate element, in which a relatively low heat conduction is required, as it has, for example, stainless steel.

Trotz dieser baulichen Gegebenheiten ist die Reduzierung des Wärmedurchgangs, wie erwähnt, lediglich in einem unbefriedigenden Umfang möglich, zumindest in wirtschaftlich sinnvoller Art und Weise.Despite these structural conditions, the reduction of the heat transfer, as mentioned, only possible to an unsatisfactory extent, at least in an economically meaningful way.

Die insoweit vorhandene relativ hohe Wärmebelastung der Nabe beeinflusst die Standzeit der Bremsscheiben/Nabenverbindung insgesamt und führt unter Umständen zu funktions- und damit sicherheitsrelevante Auswirkungen.The extent existing relatively high heat load on the hub affects the life of the brake discs / hub connection in total and may lead to functional and thus safety-relevant effects.

Aus der WO 2005/088151 A1 sind Zwischenelemente bekannt, bei denen zur Demontage der Abstand der Schenkel zueinander durch axiales Verschieben verkleinert wird. Dabei sind an beiden Schenkeln miteinander korrespondierende Vorsprünge bzw. Vertiefungen vorgesehen, in deren gebildete Zwischenräume betriebsbedingt Schmutz gelangen kann, der, insbesondere in Verbindung mit der Reibungswärme zu einem Verbacken mit dem anliegenden Stützelement bzw. Mitnehmer führt, so dass eine Demontage vielfach nur sehr schwer zu bewerkstelligen ist.From the WO 2005/088151 A1 Intermediate elements are known in which for disassembly, the distance between the legs is reduced to each other by axial displacement. In this case, mutually corresponding projections or recesses are provided on both legs, in the formed gaps due to operationally can get dirt, which leads, especially in conjunction with the frictional heat to a caking with the adjacent support element or driver, so that disassembly often very difficult to accomplish is.

Der Erfindung liegt die Aufgabe zugrunde, eine Bremsscheiben/Nabenverbindung der gattungsgemäßen Art so weiterzuentwickeln, dass mit konstruktiv geringem Aufwand die Wärmebelastung der Nabe minimiert und die Standzeit der Bremsscheiben/Nabenverbindung verbessert wird.The invention has the object of further developing a brake discs / hub connection of the generic type so that with a structurally low Expense the heat load of the hub minimized and the service life of the brake discs / hub connection is improved.

Diese Aufgabe wird durch eine Bremsscheiben/Nabenverbindung mit den Merkmalen des Anspruchs 1 gelöst.This object is achieved by a brake discs / hub connection with the features of claim 1.

Dadurch, dass die Schenkel lediglich in Teilbereichen aneinander liegen, also nicht mehr vollflächig, wird der Wärmeübergang um einen wesentlichen Faktor reduziert, wobei die verbleibenden Anlageflächen der beiden Schenkel lediglich abhängig von der auftretenden mechanischen Belastung zu dimensionieren sind. Die Anlageflächen sind so groß gewählt, dass die Bremskräfte ohne plastische Deformation der Zwischenelemente übertragen werden können.Due to the fact that the legs lie against one another only in partial areas, that is to say no longer over the entire area, the heat transfer is reduced by a substantial factor, with the remaining contact surfaces of the two legs only to be dimensioned as a function of the mechanical load that occurs. The contact surfaces are chosen so large that the braking forces can be transmitted without plastic deformation of the intermediate elements.

Wie sich gezeigt hat, ist eine entsprechende Kraftübertragung dann gewährleistet, wenn die Anlageflächen etwa 25 bis 40 % der Gesamtüberdeckungsfläche betragen.As has been shown, a corresponding power transmission is ensured when the contact surfaces amount to about 25 to 40% of the total overlap area.

Einer der beiden Schenkel auf seiner Anlageseite ist gleichflächig, während der anliegende Schenkel auf seiner zugeordneten Seite mit Quer- oder Längsstegen versehen ist, die jeweils eine plane Auflagefläche aufweisen, die auf der Anlagefläche des anderen Schenkels aufliegt. Selbstverständlich liegen dabei die Auflageflächen der Stege in einer Ebene, so dass eine Gesamtauflage gewährleistet ist.One of the two legs on its contact side is the same area, while the adjacent leg is provided on its associated side with transverse or longitudinal webs, each having a flat support surface which rests on the contact surface of the other leg. Of course, while the bearing surfaces of the webs lie in a plane, so that a total edition is guaranteed.

Die den Auflageflächen abgewandten Seiten sind gemäß der Erfindung glatt- und vollflächig ausgebildet, so dass sich das jeweilige Stützelement bzw. der jeweilige Mitnehmer über den gesamten Flächenbereich abstützen können zur Übertragung der Bremskräfte.The bearing surfaces facing away from the bearing surfaces are smooth and full surface formed according to the invention, so that the respective support member or the respective driver can be supported over the entire surface area for transmitting the braking forces.

Durch die glatt- und vollflächige Ausbildung der die Außenseiten bildenden Flächen wird verhindert, dass sich zwischen den einander zugewandten Anlageflächen der Stützelemente bzw. der Mitnehmer und den jeweiligen Schenkeln Schmutz sammelt oder Korrosion ausbildet, was eine Demontage der Zwischenelemente im Servicefall erheblich erschweren würde.Due to the smooth and full-surface design of the outer surfaces forming surfaces is prevented from collecting dirt or corrosion forms between the mutually facing contact surfaces of the support elements and the driver and the respective legs, which would significantly complicate disassembly of the intermediate elements in case of service.

Anstelle der genannten Stege sind auch andere Formen der partiellen Auflageflächen denkbar, deren Anzahl und Dimensionierung im Wesentlichen abhängig ist von den zu übertragenden Kräften.Instead of said webs, other forms of partial bearing surfaces are conceivable, the number and dimensions of which is essentially dependent on the forces to be transmitted.

Wie bisher kann als Material für das Zwischenelement rostfreier Stahl eingesetzt werden, wobei die Herstellung des Zwischenelementes in der Hauptsache durch spanloses Formen erfolgt.As before, can be used as a material for the intermediate element stainless steel, wherein the production of the intermediate element takes place mainly by chipless forming.

Die hervorstehenden partiellen Auflageflächen können durch Prägen der umliegenden Bereiche hergestellt werden.The protruding partial contact surfaces can be produced by embossing the surrounding areas.

Da die dabei sich einstellende Materialverdrängung zu einer Längung und in den geprägten Bereichen zu einer Verbreiterung des Schenkels führt, was im Fertigungsablauf problematisch sein kann, sind zweckmäßigerweise entsprechende Maßnahmen vorzusehen.Since the thereby adjusting material displacement leads to a lengthening and in the embossed areas to a broadening of the leg, which can be problematic in the production process, appropriate measures are expediently provided.

Eine Verbreiterung des durch Prägen zu bearbeitenden Schenkels könnte zu einem Verklemmen des Blechstreifens innerhalb einer Führungseinrichtung führen, der dadurch begegnet wird, dass der zu prägende Schenkel über seine Länge schmaler geschnitten wird, so dass sich das Material beim Prägen ohne die Gefahr einer Verklemmung ausdehnen kann.Broadening the leg to be machined by embossing could result in jamming of the metal strip within a guide which is counteracted by narrowing the leg to be embossed along its length so that the material can expand during embossing without the risk of jamming ,

Eine Kompensation der Längendehnung erfolgt durch Vorsehen eines Materialpuffers zwischen dem Prägeprozess und einem nächsten Umformprozess, bei dem beispielsweise die Schenkel endseitig abgewinkelt werden.A compensation of the elongation is effected by providing a material buffer between the embossing process and a next forming process in which, for example, the legs are angled end.

Die Anlage des einen Schenkels lediglich in Teilbereichen am anderen Schenkel führt nicht nur zu einer Reduzierung der für einen Wärmeübergang wirksamen Flächen, sondern durch den zwischen zwei Teilbereichen gebildeten Spalt ergibt sich auch eine bessere Kühlung, da ein ungehinderter Durchtritt von Luft, vor allem auch Fahrtwind für eine effektive Kühlung sorgt, die gleichfalls zu einer Reduzierung der Wärmebelastung der entsprechenden Teile beiträgt.The plant of one leg only in partial areas on the other leg not only leads to a reduction of effective for heat transfer surfaces, but by the gap formed between two subsections also results in better cooling, as an unimpeded passage of air, especially wind ensures effective cooling, which also contributes to a reduction in the heat load of the corresponding parts.

Weitere vorteilhafte Ausbildungen der Erfindung sind in den Unteransprüchen gekennzeichnet.Further advantageous embodiments of the invention are characterized in the subclaims.

Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand der beigefügten Zeichnungen beschrieben.An embodiment of the invention will be described below with reference to the accompanying drawings.

Es zeigen:

Figur 1
eine Bremsscheiben/Nabenverbindung in einer Explosivdarstellung
Figur 2
eine Einzelheit der Bremsscheiben/Nabenverbindung in einer perspektivischen Ansicht
Figur 3
die Einzelheit nach Figur 2 in einer Seitenansicht.
Show it:
FIG. 1
a brake discs / hub connection in an exploded view
FIG. 2
a detail of the brake discs / hub connection in a perspective view
FIG. 3
the detail after FIG. 2 in a side view.

In der Figur 1 ist eine Bremsscheiben/Nabenverbindung dargestellt, zur Verbindung einer ringförmigen, innen belüfteten Bremsscheibe 1 mit einer Nabe 2, die als Bremsscheibennabe, aber auch als Radnabe ausgebildet sein kann, auf die die Bremsscheibe aufschiebbar ist.In the FIG. 1 a brake discs / hub connection is shown, for connecting an annular, internally ventilated brake disc 1 with a hub 2, which may be formed as a brake disc hub, but also as a wheel hub, on which the brake disc can be pushed.

Zur Drehmomentenübertragung sind am Innenumfang der Bremsscheibe 1 sich radial nach innen erstreckende, abständig zueinander angeordnete und gleichmäßig über den Umfang verteilte Stützelemente 4 angeformt.For torque transmission 1 radially inwardly extending, spaced apart and evenly distributed over the circumference supporting elements 4 are integrally formed on the inner periphery of the brake disc.

Die Nabe 2 weist auf ihrem der Bremsscheibe 1 zugewandten Endabschnitt über den Außenumfang verteilte, radial nach außen vorstehende Mitnehmer 5 auf, die im Sinne einer Verzahnung mit den Stützelementen 4 der Bremsscheibe 1 korrespondieren.The hub 2 has on its the brake disc 1 facing end portion distributed over the outer circumference, radially outwardly projecting driver 5, which correspond in the sense of a toothing with the support members 4 of the brake disc 1.

Zwischen den Stützelementen 4 und den Mitnehmern 5 sind Zwischenräume gebildet, in die Zwischenelemente 3 in Achsrichtung der Bremsscheibe 1 bzw. der Nabe 2 eingefügt sind. Das bei einer Bremsung wirksam werdende Bremsmoment wird von den Stützelementen 4 der Bremsscheibe 1 über die Zwischenelemente 3 auf die Mitnehmer 5 der Nabe 2 übertragen.Between the support elements 4 and the drivers 5 gaps are formed, are inserted into the intermediate elements 3 in the axial direction of the brake disc 1 and the hub 2. The braking torque becomes effective during braking transmitted from the support members 4 of the brake disc 1 via the intermediate elements 3 on the driver 5 of the hub 2.

Ein solches Zwischenelement ist als Einzelheit jeweils in den Figuren 2 und 3 dargestellt. Darin ist auch zu erkennen, dass das Zwischenelement 3 zwei aneinander liegende Schenkel 6, 7 aufweist, wobei sich an deren einander abgewandten Flächen ein zugeordneter Mitnehmer 5 bzw. ein zugeordnetes Stützelement 4 abstützen.Such an intermediate element is as a detail in the respective Figures 2 and 3 shown. It can also be seen that the intermediate element 3 has two adjoining legs 6, 7, wherein an associated driver 5 or an associated support element 4 are supported on the surfaces facing away from each other.

Erfindungsgemäß liegt der Schenkel 7 mit Vorsprüngen an dem im weitesten Sinn parallel ausgerichteten Schenkel 6 an. In der Figur 2 ist das Zwischenelement vor einer Montage gezeigt. Hierbei sind die Schenkel 6, 7 geringfügig, durch innewohnende Rückstellkräfte gespreizt, d.h. sie liegen in diesem Fall noch nicht aneinander.According to the invention, the leg 7 bears against projections on the limb 6 aligned in the widest sense. In the FIG. 2 the intermediate element is shown prior to assembly. Here, the legs 6, 7 are slightly spread by inherent restoring forces, ie they are not yet in this case together.

Hierzu sind im Beispiel an dem Schenkel 7 durch Prägen quer zur Längserstreckung des Schenkels 7 Stege 8 angeformt, die jeweils eine planebene Auflagefläche aufweisen, die an der zugewandten Fläche des Schenkels 6 anliegen.For this purpose, in the example on the leg 7 by embossing transversely to the longitudinal extent of the leg 7 webs 8 are formed, each having a flat bearing surface, which abut the facing surface of the leg 6.

Bevorzugt sind die Stege 8 in gleichem Abstand zueinander angeordnet.Preferably, the webs 8 are arranged at the same distance from each other.

Durch die Prägung, bei der eine Materialverdünnung durch ein Prägewerkzeug erreicht wird, bilden sich zwischen den Stegen 8 Spalte 9 aus, die eine Luftzirkulation und damit einen Wärmeaustrag ermöglichen.By embossing, in which a material dilution is achieved by an embossing tool, formed between the webs 8 column 9, which allow air circulation and thus a heat discharge.

Wie insbesondere die Figur 2 sehr deutlich zeigt, ist der obere Schenkel 7 schmaler geschnitten als der untere Schenkel 6, so dass eine Verbreiterung des Schenkels 7 im Bereich der Prägung problemlos möglich ist, natürlich nur dann, wenn die Verbreiterung nicht über die Breite des unteren Schenkels 6 hinausgeht.How the particular FIG. 2 shows very clearly, the upper leg 7 is narrower than the lower leg 6, so that a widening of the leg 7 in the embossing is easily possible, of course, only if the broadening does not exceed the width of the lower leg 6.

In dieser Darstellung ist auch deutlich zu erkennen, dass die beiden einander abgewandten Außenflächen der Schenkel 6, 7 glatt- und vollflächig ausgebildet sind, ebenso wie die Auflagefläche des Schenkels 6, an der die Stege 8 anliegen.In this illustration, it can also be clearly seen that the two outer surfaces of the legs 6, 7 remote from each other are smooth and full-surface-shaped, as is the bearing surface of the leg 6 against which the webs 8 abut.

Im Übrigen besteht das Zwischenelement 3 aus einem im Wesentlichen spanlos umgeformten Blechstreifen, der beispielsweise von einem Coil abgelängt sein kann, wobei die beiden Schenkel 6, 7 durch Faltung quer zur Längserstreckung hergestellt werden und endseitig jeweils eine Abwinkelung 10 aufweisen, die im Zusammenwirken mit einem nicht dargestellten Sicherungselement eine axiale Sicherung der Bremsscheibe 1 an der Nabe 2 gewährleistet.Moreover, the intermediate element 3 consists of a substantially chipless formed metal strip, which may be cut from a coil, for example, wherein the two legs 6, 7 are produced by folding transversely to the longitudinal extent and end each have a bend 10, which in cooperation with a fuse element not shown ensures axial securing of the brake disc 1 to the hub 2.

Claims (13)

  1. Brake disc/hub connection, wherein a brake disc (1) has at its inner circumference a plurality of evenly distributed support elements (4), which correspond to drivers (5) located at the outer circumference of a hub (2) while providing security against rotation, wherein, for the transmission of a braking torque, intermediate elements (3) with two contacting legs (6, 7), which are installed in the axial direction of the brake disc (1), are provided in interstices between the drivers (5) and the support elements (4), with an associated driver (5) or an associated support element (4) bearing against surfaces of said legs (6, 7) which are averted from one another, characterised in that the outer surfaces of the one leg (7) bear with projections formed thereon against the other leg (6), which is smooth and solid on both sides.
  2. Brake disc/hub connection according to claim 1, characterised in that the projections consist of webs (8, 9) or the like.
  3. Brake disc/hub connection according to claim 2, characterised in that the webs (8) extend in the longitudinal and/or transverse direction of the longitudinal dimension of the intermediate element (3).
  4. Brake disc/hub connection according to claim 2 or 3, characterised in that the webs (8) extend parallel to and at a distance from one another.
  5. Brake disc/hub connection according to any of claims 2 to 4, characterised in that the webs (8) are evenly spaced.
  6. Brake disc/hub connection according to any of the preceding claims, characterised in that the projections are formed by stamping the adjoining regions.
  7. Brake disc/hub connection according to any of the preceding claims, characterised in that the projections have flat contact surfaces.
  8. Brake disc/hub connection according to claim 7, characterised in that the contact surfaces are aligned to one another.
  9. Brake disc/hub connection according to any of the preceding claims, characterised in that the leg (7) having the projections is narrower than the other leg (6) before the projections are mounted.
  10. Brake disc/hub connection according to any of the preceding claims, characterised in that the intermediate element (3) is hade of a material having a low thermal conductivity.
  11. Brake disc/hub connection according to any of the preceding claims, characterised in that the intermediate element (3) is made of stainless steel.
  12. Brake disc/hub connection according to any of the preceding claims, characterised in that the intermediate element is formed from a sheet metal strip.
  13. Brake disc/hub connection according to any of the preceding claims, characterised in that the contact surfaces of the projections in total amount to approximately 25% to 40% of the total coverage surface of the legs (6, 7).
EP10754497.5A 2009-09-17 2010-09-15 Brake disc/hub connection Active EP2478250B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009041953A DE102009041953A1 (en) 2009-09-17 2009-09-17 Brake disc / hub connection
PCT/EP2010/063525 WO2011032968A1 (en) 2009-09-17 2010-09-15 Brake disc/hub connection

Publications (2)

Publication Number Publication Date
EP2478250A1 EP2478250A1 (en) 2012-07-25
EP2478250B1 true EP2478250B1 (en) 2015-07-22

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Application Number Title Priority Date Filing Date
EP10754497.5A Active EP2478250B1 (en) 2009-09-17 2010-09-15 Brake disc/hub connection

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EP (1) EP2478250B1 (en)
KR (1) KR101804586B1 (en)
CN (1) CN102498311B (en)
BR (1) BR112012005878B1 (en)
DE (1) DE102009041953A1 (en)
ES (1) ES2544037T3 (en)
WO (1) WO2011032968A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013113550B4 (en) 2013-12-05 2022-02-03 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Arrangement of a brake disc on a wheel hub
DE102016119878B4 (en) 2016-10-19 2020-08-06 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Brake disc / hub connection
DE102017129684B4 (en) * 2017-12-13 2024-01-25 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Brake discs/hub connection
DE102019125233B4 (en) 2019-09-19 2022-08-25 Schaeffler Technologies AG & Co. KG Ventilated wheel hub

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3438464A (en) * 1966-11-30 1969-04-15 Goodyear Tire & Rubber Wheel brake disk drive key
DE19642166A1 (en) * 1996-10-12 1998-04-16 Fischer Georg Verkehrstechnik Wheel mounting, especially for commercial vehicles
DE19807184C1 (en) * 1998-02-20 2000-04-20 Knorr Bremse Systeme Brake disk for commercial vehicle
DE19918069B4 (en) 1999-04-21 2004-06-24 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Brake disc / hub combination and intermediate elements for a brake disc / hub combination
DE10046705C1 (en) * 2000-09-21 2002-07-25 Knorr Bremse Systeme Brake disc / hub connection for vehicle disc brakes
DE102004012103B4 (en) * 2004-03-12 2009-09-10 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Brake disc / hub combination with intermediate elements
SE531597C2 (en) * 2007-10-05 2009-06-02 Scania Cv Abp Connection device for connection between a brake disc and a hub and method of mounting

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DE102009041953A1 (en) 2011-03-24
ES2544037T3 (en) 2015-08-27
KR20120079103A (en) 2012-07-11
EP2478250A1 (en) 2012-07-25
WO2011032968A1 (en) 2011-03-24
CN102498311A (en) 2012-06-13
CN102498311B (en) 2015-09-16
KR101804586B1 (en) 2017-12-04
BR112012005878A2 (en) 2016-03-15
BR112012005878B1 (en) 2020-08-04

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